The number of compounds amongst : methanal, benzaldehyde, propanal, propanone, 2,2-Dimethylpropanal, 3-methylpentanal, which give Cannizzaro's reaction are

Explanation

To determine the number of compounds that give Cannizzaro's reaction among the given compounds (methanal, benzaldehyde, propanal, propanone, 2,2-dimethylpropanal, and 3-methylpentanal), we need to follow these steps:

### Step-by-Step Solution:

1. **Understanding Cannizzaro's Reaction**:
- Cannizzaro's reaction occurs with aldehydes that do not have alpha hydrogen atoms. In this reaction, one aldehyde molecule is oxidized to a carboxylic acid, while another is reduced to an alcohol.

2. **Identifying the Compounds**:
...